spaulding-



(VNo Model.) Sheets-She-et 2.

EQ P.. SPAULDING. VALVE FOR STEAM ENGINES.

No. 572,579; Y Patented Dec. 8, 1896.

(No Modei.) 3 sheets-sheet 3. 'E'. 1:'.A SPULDING. VALVE' FR. STEAMENGINES.

Patented Deo. 8, 1896.

A l/vvmro n ATTORNEY.

TH: nofws Urns no., maro-uma. wASmNmon, u, c.

UNITED STATES PATENT OFFICE.

ELIJAH F. SPAULDING, OF BOUND BROOK, NEW JERSEY, ASSIGNOR TO THEAMERICAN ENGINE COMPANY, OF SAME PLACE.

VALVE FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 572,579, dated December8, 1896. Application iiled April 10,1896. Serial No. 586,924. (Nomodel.)

To all whom t may concern: constituting the slide-valve, have theirlongi- Be it known that I, ELIJAH F. SPAULDING, tudinal reciprocatingmovement. The heads a citizen of the United States, and a resident E,constituting the slide-valve, are connected of Bound Brook, in thecounty of Somerset together by the rods F and aremounted upon 5 5 5 andState of New Jersey, have invented certhe valve-rod G, the longitudinalmotion of tain new and useful Improvements in Valves which is impartedto the slide-valve and the for Steam-Engines, of which the following isa axial motion of which operates the cut-off specification. valves tohave their transverse reciprocation.

The invention relates to improvements in The heads E E, constituting theslide-valve, 6o ro valves for steam-engines, and pertains parmovetogether and correspond with one anticularlyto valves located within thesteamother, and hence in Figs. 2 to 5, inclusive, but chest. one of saidheads is illustrated.

In accordance with my invention I provide Each head E is formed of thethree sides a 'within the steam-chest a slide-valve which b c, the sidesa c being at substantially right 15 has a uniformlongitudinalrreciprocation,and angles to the longitudinal line of thecylin` within this valve is located an inner or cutder A and the side bbeing parallel with said off valve which has no independentlongitucylinder. The outer surface of the side b is dinal reciprocation,but simply at the proper provided adjacent to the sides a c with thetimea vertical reciprocation, the exact time shoulders cl e,- betweenwhich said side b is 7o 2o at which this cut-od valve is to actbeingvaformed with the openings f and ribs g, the riable and under thecontrol of the governsaid openings and ribs being more clearly ingdevices. illustrated in Fig. 5. The purpose of the The form landconstruction of both the openings f through the sideb is to permit, atslide-valve and the cut-off valve are new and the proper time, steam toent-er the cylinder 7 5 2 5 constitute the present invention, as herein-A through the usual ports 7L at the ends after described andparticularly pointed out thereof. in the claims. Between the sides a cof the heads E and The invention will be more fully underarranged inface-contact with the. outer surstood from the detailed descriptionhereinafface of the side b of said heads are placed 8o 3o ter presented,reference being had to the acthe cut-off valves H, the form andconstruccompanying drawings, in wl1ich tion of which are clearlyillustrated in Figs. Figure l is a side elevation of the valve- 3, et,and 5, in which it will be seen that each 'chest of a steam-enginecontaining the slide cut-off valve H is composed of the three sides andcut-off valves constructed in accordance m a 0, the sides -m n beingconnected by the 85 3 5 with and embodying the invention, the outer ribsq, and the side o being provided with the face of the valve-chest beingremoved to eX- series of lslots or openings r, which, when the pose, thevalves located withinthe said chest. cut-off valve is in position in thehead E, may Fig. 2 is an enlarged horizontal longitudinal be broughtinto alinement .with the openings section of one end of the valve-chestand the f in said head for the purpose of permitting 9o 4o valvestherein on the dotted line 2 2 of Fig. a clear passage of the steamthrough the cut- 5. Fig. 3 is an enlarged detached face view off valveand said openings f to the port h of the outer side of the cut-off valveremoved and cylinder A. At the longitudinal center from the valve-chest.Fig. 4 is a vertical of the cut-off valve H are the partitions t,section of same on the dotted line 4. 4 of Fig. between which are placedthe outer end of 95 45 3, and Fig. 5 is an enlarged vertical transthesleeve s and the sleeves w w, which 1at verse section on the dotted lino5 5 of Fig. 2. ter sleeves are mounted upon the ends of a In thedrawings, A designates the stea1npin passing through said sleeve s, as`illuscylinder, B the customary pistontherein,a11d trated more clearly inFigs. 2 and 5. The O the valve-chest. At opposite ends of the sleeve ,sis integral with and constitutes in roo 5o valve-chest O are formed thechambers D, effectan arm projecting inwardfrom the split within whichthe corresponding headsE E, sleeve which is mounted upon the valverod Gbetween the 'sides a c of the head E, being there secured by the bolt ypassing through thel ears I J, which are integral with the oppositeparts ot said sleeve Qc. The sleeve a; by means ol the ears I J vandbolt y may be adjustably secured upon the valverod G, and the purpose ofsaid sleeve with its parts engaging the partitionst t of the cutoffvalve H, is to enable the rod Gwhen having an axial motion to impart tothe cut-off valve H a Vertical reciprocating motion against the outerface of the side l) of the head E.

The purpose of imparting the vertical reciprocating motion to thecut-off valve H may be fully understood when reference is made to Fig.5, in which it will be seen that the cut-off valve H is in its lowerposition and that the openings 1 thereof are in alinement with theopeningsf in the said side b of the head E. Then the cut-off valve is inthe position shown in Fig. 5, the steam which enters the valve-chestthrough the opening L may pass directly through the openings r f in thecut-off valve H and head E. The axial movement of the valve-rod G willcause the cut-off valve H to ascend and at the proper time the solidportions of its side o will cover the openingsfin the head E and cut offthe steam from passing through said openings f to the cylinder A. Thevalve H while moving with the head E is adapted to have a verticalreciprocating motion for the purpose of opening or closing the openingsj'. Then the openings f are permitted to be open, the steam may passthrough them, and when said openings are closed by the valve H the steamwill be cut off from the cylinder. The valve-rod G has a uniformreciprocating motion and imparts this motion to the heads E, and at thesame time the said valve-rod G has a variableaxial motion for thepurpose of cutting off the steam from the cylinder A by :means of thecut-off valves H at the proper time and under the influence of thegoverning devices.

Then the head E at the left on the valverod G is in position to admitsteam through the port h to the cylinder A, the head E at the right handon said valve-rod will be removed from its port 7L, and at such time thesteam at the right-hand end of the cylinder may exhaust into the outerend of the chainberD at the right-hand end of the valve-chest, whichchamber connects with the usual exhaust H, and when the head E at therighthand end of the valve-rod has its ports j' uncovered and inposition to admit steam through the port 7ly at the right-hand end ofthe cylinder A the head E at the left hand will be removed from the porth at the lefthand end of the cylinder A, and at such time the steam atthe left-hand end of the cylinder Amay exhaust into the outer end of thechamber D at the left-hand end of the valve-chest, which, as customary,is connected with the usual exhaust. The live steam completely fills thevalve-chest between the heads E E of the slide-valve and enters betweenthe sides a c of said heads, and hence, whenever the openings j' of theheads E are uncovered and in line with the ports h at the ends of thecylinder A the live steam will pass directly into the cylinder. Theheads E are provided with the packing-strips M, which prevent the livesteam from passing around said heads to the exhaust.

Upon reference to Fig. 5 it will be seen that the upper half of the headE at the left-hand portion of the valve-chest contains in its side l)one more openin g or port f than the lower half of said head. The head Eat the righthand end of the valve-rod G will contain in its lower halfone more opening f than in its upper half, and hence it is that both ofthe cut-off valves H may be operated from the one valve-rod G. When thecut-off valve H at the left-hand end of the valve-chest is in its lowerposition, as shown in Fig. 5, admitting steam through the openings orports r f 9o to the port h,'leading into the left-hand end of thecylinder A, the cut-off valve H at the right-hand portion of thevalve-chest will be in its upper position, closing the ports f in theright-hand head E. Thus it will be understood that when one cut-offvalveH is descending to open the ports f in line with it the othercut-off valve H will be closing the ports f in its head. The cut-offvalves H do not, preferably, have a sudden movement, but have a gradualvertical reciprocation during the longitudinal reciprocation of theheads E.

As above described, the action of the cutoff valves H is variable inorder that the steam may be cut off from the cylinder A at the desiredmoment under the control of the governing devices.

The valve-rod G may bey connected with the heads E, so as to reciprocatethe same, by any suitable means, and in the present instance the sleeve.fr 011 said valve-rod iitting between the sides a c of said headsenables the valve-rod to effect the longitudinal reciprocating movementof said heads. The means of connection between the heads E and valve-rodG must also be such'as to enable said rod to have an axial movement inorder that it may at the proper time, regulated by the governingapparatus, move the cut-off valves H to open and close the ports to thecylinder. The valve-gear for operating the slide-valve (composed of theheads E E) and cut-oft valves H will be of any suitable character, andas disclosing an example of satisfactory gear for this purpose attentionis called to Letters Patent of the United States No. 385,533, granted tome on July 3, 1888. The present invention is not confined, however, toany special form or construction of valve-gear.

As above described, the heads E E, composing the slide-valve, have asimultaneous and uniform lon gitudinal reciprocation, while the cut-offvalves H have simply, with re- ICO IIO

spect to their seats and cooperating ports, a vertical reciprocation.rocation of the cut-oft valve H is variable as to time of action under,the control of the governing devices, while the traverse of the headsEE, composing the slide-valve, is invariable.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. In a steam-engine, the valve-chest having the chambers at itsopposite extreme ends connected with the exhaust, and the reciprocatingslide-valve in said chest and composed of the connected heads eachcomprising the sides ci, c, b, the latter having the series of openin gsf, and the former the packingstrips M, combined with the cut-oit valveshaving the openings r and arranged in contact with said side b betweenthe sides d, c, and adapted to have a transverse reciprocation, whilesaid heads have a longitudinal reciprocation, and the valve-rodconnected with said heads and said cut-off valves; substantially as setforth.

2. In a steam-engine, the valve-chest having the chambers at itsopposite extreme ends connected with the exhaust and having also thecentral inlet for steam, the reciprocating slide-valve in said chest andcomposed of the heads E, E, located within the chambers at the oppositeends of said chest and each Comprising the sides a, b, and the side chaving the openings f, the rods F connecting said heads, and thepacking-strips M in said sides a, combined with the cut off valveshaving the openings fr and arranged in contact with said side b betweenthe sides a, c, and adapted to have a transverse reciprocation, whilesaid heads have a longitudinal reciprocation, and the valve-rodconnected Y with said heads and said cut-oit valves; substantially asset forth.

. 3. In a steam-engine, the valve-chest having the chambers at itsopposite extreme ends connected with the exhaust and having also thecentral inlet for steam, and the connected heads E, E, located in saidchambers and leaving the space between them entirely7 open for livesteam, said heads being provided with packing at their outer edges toprevent the live steam from reaching the exhaust, and with the series ofports adapted to communicate with the usual ports leading to thecylinder, and said heads being of a size to oom-l The vertical recippletely close said chambers in a transverse direction, combined with thecut-ott valves having a transverse reciprocation and provided with portswhich may be moved into alinement with or out of alinement from theports in the said heads constituting the slidevalve, and thereciprocating valve-rod connected with said slide and cut-off valves andadapted to turn axially and thereby operate the latter; substantially asset forth.

4. In a steam-engine, the steam-chest having the chambers at its extremeends connected with the exhaust and having also the central opening forsteam, and the reciproeating slide-valve in said chest and composed ofthe connected heads each comprising the sides a, c, b, the latter havingthe series of openings f and the former extending entirely acrossbetween all the adjacent walls of said chest to cut oii the live steamfrom the exhaust, while the sides c permit the live steam filling allthe central part of the steam-chest to pass outward beyond them,combined with the cut-off valves having the openings r and arranged incontactwith said side b between the sides a., c, and adapted to have atransverse reciprocation, while said heads have a longitudinalreciprocation, and the valve-rod connected with said heads and saidcut-off valves; substantially as set forth.

5. In a steam-engine,the reciprocating slidevalve composed of the headsE, E, each comprising the sides d, c, b, the latter having the series ofopenings f, combined with the cutoff valves H having the ports oropenings r and arranged against said side b, the reciprocating valve-rodG connected with said heads E, the sleeves secured upon the saidvalve-rod between said sides a, c, and the sleeves .s integral with saidsleeves and carrying the pins and sleeves w, said sleeves s, s, w, beingseated in said slide-valves, and said valve-rod being adapted toreciprocate said slide-valve and also to impart a transversereciprocating motion to said cut-off valves; substantially as set forth.

Signed at New York, in the county of New York and State of New York,this 6th day of April, A. D. 1896.

ELIJ AH F. SPAULDING.

IVitnesses:

CHAs. C. GILL, E. Jos. BELKNAP.

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